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Old April 16th 07, 07:39 PM posted to rec.aviation.soaring
Steve Davis
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Posts: 36
Default DG-300/303 owners...

At 17:36 16 April 2007, Marc Ramsey wrote:
Alan Montague wrote:
Is there any scope for non-destructive testing by
industrial
radiology?

X-rays are sensitive in showing up minor ripples in
children's bones? Would they work for the ripples
in
my spar?


I would think that an ultrasonic inspection method

could be developed for much less cost than radiography.
Ultrasonic might be able to look into the layers of
rovings
and see how deep the undulations are. You might want

to check with some companies which make composite
aircraft and composite spars. Cirrus Design, Scaled

Composites, Adam Aircraft etc..., and find out how
they
do NDT on their designs.

I again look at the Duo spar inspections as an example,
the original
protocol involved cutting holes in the wing skin and
visually inspecting
the spars, in short order SH evolved to using a borescope
through the
existing inspection ports and a few holes drilled in
the root rib and
aileron cutouts, eventually someone figured how to
do it with
inexpensive lipstick cameras and long rods.

Mark